\begin{table}%t1 \caption{\label{Table1}Channel spectral performance.} %\centerline {\begin{tabular}{l|ccccccccc} \hline\hline &&&&&&&&& \\[-2mm] Channel Label & 100 & 143U & 143P & 217U & 217P &353U & 353P & 545 & 857 \\ \hline Centre Freq. (GHz) & 101.0 & 143.6 & 142.3 & 221.7 & 219.2 & 361.3 & 359.3 & 556.3 & 863.1 \\ %\hline Centre Freq. Dispersion $\sigma$(GHz) & 0.58 & 0.56 & 0.71 & 0.33 & 0.38 & 2.29 & 2.02 & 1.57 & 5.36 \\ %\hline Upper band egde (GHz) & 118 & 166 & 163 & 253 & 253 & 411 & 408 & 641 & 992 \\ %\hline Lower band egde (GHz) & 85 & 121 & 121 & 189 & 182 & 306 & 306 & 467 & 734 \\ %\hline Average filter transmission & & & & & & & & & \\ over $30\%$ bandwidth (GHz) & 0.81& 0.83& 0.83& 0.79& 0.79& 0.79& 0.79& 0.57& 0.54\\ %\hline No. of unpolarized detectors & 0 & 4 & 4 & 4 & 4 & 4 & 4 & 4 & 4 \\ %\hline No. of lin. pol. detectors & 8 & 0 & 8 & 0 & 8 & 0 & 8 & 0 & 0 \\ \hline Bandwidth (GHz) & 29.8 & 43.8 & 42.1 & 60.6 & 63.5 & 95.7 & 91.9 & 165.9 & 248.8 \\ %\hline Bandwidth Dispersion $\sigma$(GHz) & 1.4 & 0.4 & 1.4 & 1.6 & 1.0 & 4.4 & 7.1 & 3.1 & 8.1 \\ \hline \end{tabular}} \par \tablefoot{Beamwidths listed are from the original design specification. Expected beam characteristics from calibration campaign can be found in detail in \cite{Planck-Maffei}.} \end{table}